Usage of tlspage:
  -cert string
    	Output certificate file
  -chain string
    	Output full-chain file (without private key)
  -combined string
    	Output combined file (with private key)
  -days int
    	Minimum time remaining before certificate expiration in days (default 30)
  -key string
    	Output private key file
  -origin string
    	Server from which to get the certificate (default "tls.page")